The JBX85190 SC/ST singlemode fiber patch cable represents the ideal solution for professional network installations requiring reliable, high-speed optical connectivity. This 5-meter duplex cable combines precision engineering with cost-effective performance, making it suitable for data centers, telecommunications facilities, and enterprise network upgrades. **Technical Excellence:** Constructed with 9/125 singlemode fiber and advanced G.657.A1 glass formulation, this cable delivers superior performance metrics. The ≤0.35dB insertion loss (0.15dB typical) ensures minimal signal degradation, while ≥20dB return loss guarantees optimal signal reflection characteristics. Attenuation specifications of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm comply with ANSI/TIA/EIA-455-171-A standards, ensuring reliable long-distance transmission. **Design & Durability:** The bright yellow OFNR-rated jacket provides excellent visibility for installation and maintenance while meeting building safety codes. The compact 1.8mm outside diameter allows flexible routing through cable trays and conduit. Duplex configuration with SC/UPC to ST/UPC connectors and Type A to B crossover polarity accommodates most network architectures. **Compliance & Standards:** TAA compliant for government purchasing requirements. RoHS/ELV certified for environmental safety. Manufactured in Taiwan, the US, or China with consistent quality assurance. **Flexibility & Support:** Available in custom lengths to match specific installation requirements. Free standard shipping on orders exceeding $99. Rapid fulfillment from multiple distribution centers (Danville CA, Fort Worth TX, Beaufort SC). 90-day limited warranty provides peace of mind. **Ideal Applications:** Perfect for backbone connections, server-to-switch links, and network upgrades in IT infrastructure, telecommunications, and healthcare facilities requiring mission-critical connectivity.